Question

ANSWER THE BOTH QUESTION GIVEN BELOW: (DON"T ANSWER ONLY ONE RATING WILL NOT BE GIVEN LIKE THIS)

1. Previous scientific evidence is a catalyst for new scientific discoveries. How did Hershey and Chase demonstrate that DNA is the genetic material of viruses following the statement by R.M. Herriott (1951) that “A virus may act like a little hypodermic needle full of transforming principles”?                                             (10 marks)

2. Complete the following table:                                                            (6 marks)

Enzyme	Function in DNA replication
DNA polymerase III
Helicase
Primase
Gyrase
DNA polymerase I
DNA ligase

Answer 1

1. This was the very hypothesis their experiment was designed to test; all that was left to do was devise a means of identifying the nucleic acid if it did indeed "flow into the cell".